Hard film, also known as film, is a sheet for blistering, in which the thickness of the sheet is more than 2mm, commonly used are: PET (polyethylene terephthalate) hard film,
PC/PVC hard sheet picture PVC (polyvinyl chloride) hard sheet, PS (polystyrene) hard sheet, ABS (engineering plastic).
PS hard sheet has low density, poor toughness, easy to burn, and produces styrene gas (hazardous gas) when burned, so it is generally used to produce various industrial plastic trays. PVC hard sheet has moderate toughness, is not easy to burn, generates chlorine gas when burned, and has certain influence on the environment. PVC is easy to heat seal, and can be sealed by sealing machine and high frequency machine. It is the main raw material for producing transparent plastic products.
PET hard sheet has good toughness, high transparency, easy to burn, no harmful gas when burning, and is an environmentally friendly material, but the price is high, suitable for high-grade plastic products. The blister bulbs in Europe and the United States generally require PET hard sheets, but It is not easy to heat seal, which brings great difficulty to the package. In order to solve this problem, people put a layer of PVC film on the PET surface, named PETG hard film, but the price is higher. The materials used for thick plates are mainly: ABS, PS, PVC and other blister packaging..
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